Prassel, Frank R., author
Goodyear, 1979
Buku Teks
Carlson, Ronald L., author
Anderson, 1970
Buku Teks
Ross, Lee E., 1958-, author
Routledge, Taylor & Francis Group, 2018
Buku Teks
Barkan, Steven E., author
Jones and Bartlett, 2011
Buku Teks
Andrew Ashworth, Alison Macdonald, Ben Emmerson
Sweet & Maxwell , 2012
Buku Teks